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WO2016064072A1 - Dispositif d'imagerie à rayons x - Google Patents

Dispositif d'imagerie à rayons x Download PDF

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Publication number
WO2016064072A1
WO2016064072A1 PCT/KR2015/007855 KR2015007855W WO2016064072A1 WO 2016064072 A1 WO2016064072 A1 WO 2016064072A1 KR 2015007855 W KR2015007855 W KR 2015007855W WO 2016064072 A1 WO2016064072 A1 WO 2016064072A1
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WO
WIPO (PCT)
Prior art keywords
ray
acquisition
acquisition surface
image
rays
Prior art date
Application number
PCT/KR2015/007855
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English (en)
Korean (ko)
Inventor
박무용
우재희
Original Assignee
오스템임플란트 주식회사
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Publication of WO2016064072A1 publication Critical patent/WO2016064072A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computed tomography [CT]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
    • A61B6/51—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for dentistry

Definitions

  • the present invention relates to an X-ray imaging apparatus, and more particularly, to adjust the irradiation range of the collimator unit without moving the X-ray source unit or the X-ray sensor unit to adjust the irradiation range at the time of CT imaging and panorama image shooting.
  • the present invention relates to an X-ray photographing apparatus capable of changing the irradiation range to prevent deterioration of the X-ray sensor unit.
  • the dentist is provided with an X-ray imaging apparatus capable of performing X-ray imaging to determine the condition of the teeth and alveolar bone for the purpose of treating teeth and various periodontal diseases or the correction of orthodontics.
  • the X-ray imaging apparatus used in dentistry transmits a certain amount of X-rays to a tooth portion, which is a body part to be photographed, senses the intensity of the transmitted X-rays, converts it into an electrical signal corresponding to the X-ray intensity, and then sends it to a computer.
  • the computer obtains an image by processing the X-ray intensity of each point of the body imaging region and processing it.
  • X-ray imaging apparatuses for CT Computerized Tomography
  • X-ray imaging apparatuses for panoramas capable of capturing two-dimensional planes are mainly used.
  • CT X-ray imaging apparatus is an imaging device that shows a tomographic plane of the body that cannot be represented by normal photography.
  • the X-ray imaging apparatus rotates X-rays at a constant angle over 360 degrees and projects the transmitted X-rays to a human body. It is a tomography device that collects through and reconstructs the absorbed values of the cross section of the human body.
  • the panoramic X-ray photographing apparatus is to photograph the whole in the circumferential direction around the X-ray generator, it is a device that can take a panoramic view so that you can see the entire tooth condition and the jaw joint at a glance.
  • the 'X-ray imaging apparatus' has an advantage of capturing both CT X-ray images and panoramic X-ray images with one X-ray image acquisition device, CT for acquiring CT X-ray images and panoramic X-ray images There was an inconvenience of selectively mounting the X-ray sensor and the panoramic X-ray sensor.
  • one dental X-ray image and a panoramic X-ray image are acquired using one X-ray image acquisition device, but one area sensor dentistry CT and panoramic X-ray image acquisition devices have been disclosed to selectively acquire CT X-ray images and panoramic X-ray images using only a bay.
  • the dental CT and panoramic X-ray image acquisition device moves the light source unit 110 as shown in FIG. 1 to select an X-ray irradiation area, or as shown in FIG. 2. , X-ray sensor unit 120 had to be moved.
  • a separate light source unit moving device for moving the light source unit 110 in order to move the light source unit 110, a separate light source unit moving device for moving the light source unit 110 must be provided, and in order to move the X-ray sensor unit 120, a separate X-ray sensor unit moving device is provided.
  • the device for moving the light source unit or the device for moving the X-ray sensor unit has to be provided, there are many problems such as complicated equipment, a problem of increasing manufacturing cost, and a long manufacturing period.
  • the dental CT and panoramic X-ray image acquisition device uses the sensing surface of the X-ray sensor used during CT X-ray imaging in panoramic X-ray imaging as shown in FIGS. 1 and 2.
  • CT X-ray imaging is performed after panoramic X-ray imaging, deterioration occurs in the sensing surface of the sensor used for panoramic X-ray imaging.
  • An object of the present invention for solving the problems according to the prior art, by adjusting the irradiation range of the collimator unit without moving the X-ray source unit or the X-ray sensor unit in the irradiation range and CT imaging when shooting
  • An object of the present invention is to provide an X-ray photographing apparatus capable of preventing a deterioration of an X-ray sensor unit by changing an irradiation range.
  • An X-ray imaging apparatus of the present invention for solving the above technical problem, X-ray source unit; A collimator for adjusting an irradiation range of X-rays radiated from the X-ray source unit; And an X-ray sensor unit having a sensing surface divided into a plurality of acquisition surfaces, and detecting an X-ray passing through the collimator unit, wherein the collimator unit includes an X on the plurality of acquisition surfaces during CT imaging.
  • the line is adjusted to be irradiated and configured to irradiate X-rays to at least a portion of one of the acquisition surfaces of the plurality of acquisition surfaces during panoramic image capturing.
  • the plurality of acquisition surfaces may include a first acquisition surface and a second acquisition surface, and X-rays may be irradiated onto at least a portion of the first acquisition surface when the panoramic image is captured.
  • the first acquisition surface may be a surface from which a reference image, which is a reference for combining the combined image for generating the CT final image, is obtained
  • the second acquisition surface may be a surface from which the combined image is obtained.
  • the area ratio of the first acquisition surface and the second acquisition surface may be in the range of 1: 9 to 3: 7.
  • the first acquisition surface and the second acquisition surface may be composed of one sensor.
  • the first acquisition surface and the second acquisition surface may be composed of different sensors, respectively.
  • both the first acquisition surface and the second acquisition surface are activated when the CT image is taken, and some surfaces where X-rays are radiated from the first acquisition surface are activated when the panorama image is taken.
  • the partial surface activated during the panoramic image capturing may be configured to be a different area for each panoramic image capturing.
  • some of the surfaces activated during the panoramic image capturing may be configured to be different regions periodically.
  • the partial surface activated when capturing the panoramic image may be configured to be different regions for each of a plurality of photographing viewpoints photographed to obtain one panoramic image.
  • the irradiation range of the collimator unit without changing the X-ray source unit or the X-ray sensor unit, the irradiation range at the time of CT imaging and the irradiation range at the time of panoramic image setting are changed to X
  • the degradation of the line sensor portion can be prevented.
  • the existing collimator unit configured to adjust the irradiation range without mechanically driving the sensor unit and the light source unit
  • the additional manufacturing cost is increased by changing the irradiation range during CT imaging and the irradiation range during panoramic image shooting.
  • the time required for assembly of the device can be shortened.
  • FIG. 1 is a view showing a first embodiment for obtaining a panoramic X-ray image of the conventional dental CT and panoramic X-ray image acquisition device.
  • FIG. 2 is a diagram illustrating a second embodiment for acquiring a panoramic X-ray image of a dental CT and panoramic X-ray image obtaining apparatus of a species.
  • FIG 3 is a view for explaining the CT image acquisition and the panoramic image acquisition of the X-ray imaging apparatus according to an embodiment of the present invention.
  • FIGS. 4 to 6 are views illustrating a process of acquiring a panoramic X-ray image of an X-ray imaging apparatus according to an embodiment of the present invention.
  • the terms are used only for the purpose of distinguishing one component from another.
  • the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.
  • FIG. 3 is a view for explaining the CT image acquisition and panoramic image acquisition of the X-ray imaging apparatus according to an embodiment of the present invention
  • Figures 4 to 6 is a panorama of the X-ray imaging apparatus according to an embodiment of the present invention
  • the X-ray imaging apparatus includes an X-ray source unit 100, a collimator unit 200, and an X-ray sensor unit 300.
  • the X-ray source unit 100 and the X-ray sensor unit 300 are positioned to be provided on one side and the other side of the rotating unit (not shown), and when the rotating unit is rotated, CT image photographing or panoramic image capturing. Will be able to.
  • CT imaging or panoramic imaging while being rotated by the rotating means is the same as or similar to the conventional X-ray imaging apparatus, so a detailed description thereof will be omitted.
  • the X-ray source unit 100 generates X-rays for X-ray imaging and irradiates X-rays toward the examinee's head 10, and generates X-rays inside the X-ray source unit 100.
  • X-ray light source (not shown) may be provided.
  • the collimator 200 is a portion for adjusting the irradiation range of the X-rays irradiated from the X-ray source unit 100, the collimator 200 is installed in parallel with each other to be composed of a plurality of lead plates that can be adjusted
  • the irradiation range of the X-rays may be adjusted by adjusting the sizes of the slits 200h by adjusting the positions of the plurality of lead plates, respectively.
  • the X-ray sensor unit 300 is a portion for detecting the X-rays passing through the collimator unit 200, the sensing surface 310 divided into the first acquisition surface 311 and the second acquisition surface 312 is It is provided.
  • the sensing surface 310 may include one sensor or a plurality of sensors.
  • the sensing surface 310 is composed of one sensor
  • a partial area of the sensor is used as the first acquisition surface 311 and the remaining area of the sensor is used as the second acquisition surface 312. Can be used.
  • the sensing surface 310 is composed of a plurality of sensors, one sensor may be used to function as the first acquisition surface 311, and the other sensor may be used to function as the second acquisition surface 312. have.
  • the detailed configuration of the X-ray imaging apparatus including the X-ray source unit 100, the collimator unit 200, and the X-ray sensor unit 300 may be described. And operation will be described.
  • the surface is configured to irradiate X-rays.
  • the first acquisition surface 311 is a surface obtained by obtaining a reference image as a reference for combining the combined image for generating the CT final image
  • the second acquisition surface 312 is obtained from the combined image It is composed of cotton.
  • the X-ray source unit 100 and the X-ray sensor unit 300 is rotated based on a predetermined rotation axis by a rotating means (not shown) during CT imaging, as shown in FIG. 7.
  • a rotating means not shown
  • the first acquisition surface 311 and the second acquisition surface 312 are rotated at a plurality of photographing points (multiple angles). X-rays are irradiated on the entire surface, a reference image is obtained on the first acquisition surface 311, and a combined image is obtained on the second acquisition surface 312.
  • One CT final image is obtained by combining the plurality of plane image data thus obtained, wherein a reference image, which is a reference for combining the plurality of plane image data, is captured by the first acquisition surface 311.
  • the combined image which is combined by the image and generated as the CT final image, is captured by the second acquisition surface 312.
  • a CT final image having a 3D shape may be generated.
  • the area ratio of the first acquisition surface 311 and the second acquisition surface 312 is preferably in the range of 1: 9 to 3: 7, which means that the area of the first acquisition surface 311 is too large If the area of the first image is small, there is a problem that an excessive calculation process for combining the combined image is required, and if the area of the first acquisition surface 311 is too large, there is a problem that the efficiency of using the sensor falls.
  • both the first acquisition surface 311 and the second acquisition surface 312 are activated because an image must be taken from both the first acquisition surface 311 and the second acquisition surface 312.
  • it is preferable that a part of the first acquisition surface 311 to which X-rays are irradiated is selectively activated, thereby extending the life of the sensor.
  • some surfaces activated during the panoramic image capturing are configured to be different regions or periodically different regions every panoramic image capturing, thereby preventing any specific region from being continuously used.
  • some surfaces activated during capturing the panoramic image are configured to be different regions for a plurality of capturing points captured to obtain one panoramic image. It can effectively prevent the continuous use.
  • the present invention as described above has the advantage that it is possible to prevent the degradation of the X-ray sensor unit 300, specifically, after the first photographing surface 311 after the panorama photographing the first acquisition surface 311 and the first
  • the final CT image is a second image in which the panorama acquisition is not used and the image acquired on the first acquisition surface 311, which may cause deterioration, is not used and panorama shooting is not performed. Since only the image of the acquisition surface 312 is combined and configured, the quality of the final CT image can be improved.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Engineering & Computer Science (AREA)
  • Radiology & Medical Imaging (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

La présente invention concerne un dispositif d'imagerie à rayons X qui ajuste une plage d'irradiation d'une unité de collimateur sans déplacer ni transférer une unité de source de rayons X, ni une unité de capteur de rayons X, de façon à modifier et à régler une plage d'irradiation pendant la photographie d'image CT et une plage d'irradiation pendant la photographie d'image panoramique, en empêchant ainsi la détérioration de l'unité de capteur de rayons X. Selon l'invention, ledit dispositif d'imagerie à rayons X comporte : une unité de source de rayons X ; une unité de collimateur pour ajuster une plage d'irradiation d'un rayon X devant être rayonné dans l'unité de source de rayons X ; une unité de capteur de rayons X ayant une surface de détection divisée en une première surface d'acquisition et en une seconde surface d'acquisition, et détectant le rayon X ayant traversé l'unité de collimateur, l'unité de collimateur étant ajustée de telle sorte que la surface entière de la première et de la seconde surface d'acquisition est irradiée avec des rayons X pendant la photographie d'image CT, et étant configurée de telle sorte qu'au moins une surface partielle de la première surface d'acquisition pendant la photographie d'image panoramique est irradiée par des rayons X.
PCT/KR2015/007855 2014-10-23 2015-07-28 Dispositif d'imagerie à rayons x WO2016064072A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020140144209A KR20160048275A (ko) 2014-10-23 2014-10-23 X선 촬영장치
KR10-2014-0144209 2014-10-23

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WO2016064072A1 true WO2016064072A1 (fr) 2016-04-28

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Publication number Priority date Publication date Assignee Title
KR102001918B1 (ko) * 2017-10-13 2019-07-19 오스템임플란트 주식회사 엑스선 촬영 장치 및 방법
KR101941019B1 (ko) * 2018-11-26 2019-01-22 오스템임플란트 주식회사 엑스선 촬영 장치 및 방법

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100106879A (ko) * 2009-03-24 2010-10-04 (주)바텍이우홀딩스 이비인후과 및 치과 겸용 ｘ선 촬영장치
KR20100120815A (ko) * 2009-05-07 2010-11-17 주식회사바텍 Ｃｔ촬영용 센서를 이용한 파노라마 영상획득방법
KR20100120810A (ko) * 2009-05-07 2010-11-17 주식회사바텍 치과용 ｃｔ 및 파노라마 ｘ선 영상 획득장치
JP2013006033A (ja) * 2012-07-31 2013-01-10 Hamamatsu Photonics Kk 医療用ｘ線撮像システム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100106879A (ko) * 2009-03-24 2010-10-04 (주)바텍이우홀딩스 이비인후과 및 치과 겸용 ｘ선 촬영장치
KR20100120815A (ko) * 2009-05-07 2010-11-17 주식회사바텍 Ｃｔ촬영용 센서를 이용한 파노라마 영상획득방법
KR20100120810A (ko) * 2009-05-07 2010-11-17 주식회사바텍 치과용 ｃｔ 및 파노라마 ｘ선 영상 획득장치
JP2013006033A (ja) * 2012-07-31 2013-01-10 Hamamatsu Photonics Kk 医療用ｘ線撮像システム

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